/Engine/Source/Runtime/Engine/Classes/Kismet/KismetArrayLibrary.h
Gets a random item from specified array (using random stream)
static void Array_RandomFromStream ( const [TArray](API\Runtime\Core\Containers\TArray)< int32 > & TargetArray, [FRandomStream](API\Runtime\Core\Math\FRandomStream) & RandomStream, int32 & OutItem, int32 & OutIndex )